Ohmite 14FPR070E Equivalent & Substitute Parts

Part Overview

The Ohmite 14FPR070E is a 70 mOhms ±1% 4.5W through-hole axial resistor designed for current sense applications with non-inductive metal element construction. This part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity. The 14FPR070E operates across a wide temperature range of -55°C to 200°C and maintains ROHS3 compliance.

Substiute Parts

14FPR070E

OhmiteIn Stock: 87914FPR070E Datasheet

Current PartRFQ

17FPR070E

OhmiteIn Stock: 85517FPR070E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 14FPR070E is determined by the following critical parameters:

• Resistance value: 70 mOhms (exact match required)
• Tolerance: ±1% (exact match required)
• Composition: Metal Element (required for current sense application stability)
• Features: Current Sense, Non-Inductive (required for application performance)
• Temperature Coefficient: ±50ppm/°C (required for thermal stability)
• Operating Temperature Range: -55°C to 200°C (minimum requirement)
• Package Type: Axial (mechanical and electrical interface requirement)

The Ohmite 17FPR070E qualifies as a direct substitute based on matching all critical electrical and mechanical parameters. The primary difference is an increased power rating (7W versus 4.5W), which provides enhanced thermal margin and represents a compatible upgrade path for the obsolete 14FPR070E.

Parameter Comparison

Engineering Selection Recommendations

The Ohmite 17FPR070E is the qualified substitute for the obsolete 14FPR070E. Both components maintain identical electrical specifications for resistance, tolerance, temperature coefficient, and operating temperature range. The 17FPR070E carries active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment.

The increased power rating of the 17FPR070E (7W versus 4.5W) provides additional thermal headroom without altering electrical performance in current sense applications. The slightly larger physical dimensions (0.375" Dia x 1.500" L versus 0.335" Dia x 1.059" L) must be evaluated for mechanical fit within the target application.

Frequently Asked Questions (FAQ)

Q: Can the 17FPR070E directly replace the 14FPR070E in existing designs?

A: Yes, the 17FPR070E is electrically equivalent. Electrical parameters including resistance, tolerance, temperature coefficient, and operating temperature range are identical. Physical dimensions differ slightly; verify that the larger size (0.375" Dia x 1.500" L) accommodates the available board space and component layout.

Q: What is the significance of the higher power rating on the 17FPR070E?

A: The 7W rating on the 17FPR070E versus 4.5W on the 14FPR070E indicates increased thermal dissipation capability. This provides additional margin for current sense applications and does not negatively impact electrical performance when substituted into circuits designed for the original 4.5W component.

Q: Are there any compliance or regulatory differences between these parts?

A: Both the 14FPR070E and 17FPR070E are ROHS3 compliant. The 17FPR070E carries active product status, ensuring ongoing manufacturing and supply chain support, whereas the 14FPR070E is obsolete.

Q: What mechanical considerations apply when substituting the 17FPR070E?

A: The 17FPR070E has larger physical dimensions than the 14FPR070E. Verify that the increased diameter (0.375" versus 0.335") and length (1.500" versus 1.059") fit within the available component mounting space on the PCB. Both components use axial package configuration with identical electrical interface requirements.

Q: Are the metal element composition and non-inductive features preserved in the substitute?

A: Yes. The 17FPR070E maintains metal element composition and non-inductive characteristics identical to the 14FPR070E, ensuring consistent performance in current sense applications.